<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Login</title>
</head>
<body>
    <form action="${pageContext.request.contextPath}/login" method="post">
        username: <input name="username" /><br/>
        password: <input name="password" /><br/>
        <button type="submit">提交</button>
    </form>
</body>
</html>
